Back to Catalog
Kepler-311 d is a Neptune-like exoplanet (an ice giant with a thick atmosphere), about 2.0 times the radius of Earth. It has an equilibrium temperature of 327 K (54°C). The planet completes one orbit around its star every 232.0 Earth days. It was discovered in 2023 using the transit method. It orbits the star Kepler-311, located approximately 779 parsecs (2540 light-years) from Earth.
2023
Discovered
2.05
Earth Radii
327
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,023
Discovery FacilityKepler
Orbital Properties
Orbital Period232.0403 days
Semi-Major Axis0.7326 AU
Eccentricity0
Inclination89.7 deg
Physical Properties
Radius (Jupiter)0.1829 RJ
Radius (Earth)2.05 R⊕
Eq. Temperature327 K
Insolation Flux2.71 S⊕
Planetary Extremes
Where Kepler-311 d sits on the spectrum of all known exoplanets.
Radius2.05 R⊕
TinyEnormous
Temperature327 K
FrozenInferno
Year Length232.0 days
LightningGlacial
Star Distance0.733 AU
ScorchedFrozen exile
Star System View
Loading 3D view...
Size Comparison
2.05x Earth's radius (0.18x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)Kepler-311 d: 232.0 Earth days (0.733 AU)
Host Star: Kepler-311
Effective Temperature5,903 K
Mass0.974 M☉
Radius1.156 R☉
Size vs Sun1.16x larger
Metallicity [Fe/H]-0.1
Distance (pc)778.654 pc
Distance (ly)2539.6 light-years
Planets in the Kepler-311 System
Test Your Knowledge
Related Research
Loading papers...